Closure



H. E. TOWNSEND.

CLOSURE. APPLICATION FILED mmso, 1919.

Patented Jan. 31, 1922,

FIGAP Has ' INVENTOR nemes s;

Specificationof Letters Patent.

' CLOSURE.

' Application filed January 30, 1819. Serial No. 274,071.

To all whom it may concern: v 1 v Be 1t known that L'HARRYE. Townsnnn,

a citizen of the United States, and a I'QSb' dent of New York, borough of Brooklyn, and State-of New York, have invented certain new and useful Improvements in C- sures, of which the following is, a speciiicaand the like, with a narrow sealing ring or gasket so placed as to form a-seal on the insideof the mouth ofthe container at 'a distance from the top thereofand by the a lateral compression of the gasket between the mouth of the container'and a depending portion of the closure, and to form such a closure with effective means for removing it from the container. The advantages which I have in view are. the saving of closure and gasket material incident to the formation of the seal on the inside as contrasted with the outside or top ofthe container and the use of a narrowgasket, the avoidance of the risk of buckling the gasket which would exist if a widegasket were used; the formation of a thoroughly satisfactory seal depending solely or mainly onthe lateral coinpressionofthe gasket; theready removal of the closure and its capacityto :form a good seal even when not under pressure due to a vacuum in the container.

"With these objects in view 1. form a closure normally and preferably of glassor vitreous material, having preferably a flanged top adapted to extend over the mouh of the container and formed with a;

gasket holding annular shoulder at some dlstancc from ts union w th the top portion,

, and I'fita narrow gasket, preferablytof rubber, on said depending portion below and against the shoulder formed thereon. This closure is designed to be used with a container having a month which contracts from the top downward, and preferably with one in which the contractedportion merges with a cylindrical portion so located that the gasket will lie entirely against such cylindrical portion when theclosure isfully inserted into the container moutlnand my invention consists in the described closure and in the combination with such a closure of the While my improved described container. H

it I

closure will form a. good seal without further providefor an abutment in the container mouth against which the gasket rests;

when the closure is fully inserted and which serves the double purpose of providinga seallng surfaceon the under side of the mama Jan. arises.

N error.

nanny E. rownsnun, or rrtooirrrinnnw Yon-a9 gasket and serving as a limit stop, determin V inghow far-the closure shall pass down into the container mouth.

My invention Wlll.

in which it is illustrated and in which Figural is a side elevation, partly in sec-f Figure 4 is an enlarged sectional fv'iewof a portion ofthe closure and container shown in Figure 1, with the closure in the act of being inserted in the container.

Figure 5 is a similar sectional view showing the container fully inserted.

Figure Gisa similar sectional view ing a modified form of container. 5 l I Figure 7 is a similar sectional view Show;

and j a a Figure 8 is a view similar to Fig. 1, but showingthe closure top formed 1 with ia plugged opening.

Referring first I p p be best understood as 1 described in connection with the drawings tofthe' construction shown in 'Figs. 1, 4. and 5, 19 indicatesthe container mg still another modified form of container,

which is here'formed in tumblershape, with a mouth inwardly tapered at the edge as indlcated'at 1 1-, the tapering portion merging into a straight portion 15. The closure indicated iii the above figures, and also in: Figs. 6 and 7, as indicated at 10, and is formed with an annular projecting-flange 17, which extends over the mouth of the 011;

tainer, as shown, and formed also with'a downwardly extending, cylindrical portion lSadapted to enter the mouth oftherom' tamer, and of such diameter at its upper portion that its" edgewill approach quite closely to the straight portion of the container inouth.

that a gasket seat 13 is formed on the downward projection of the closure at some dist'ance from its flange 17, and preferably,

The lower portion of the, downward extension of the closure is formed of smaller diameter as indicated at 11, so

such a distance that the gasket fitted on the portion 11, and against the shoulder 13, will,

7 when the closure is inserted in the container,

fit against the straight portion 15 of the container. y

In Fig. 2 the container here shown is of jar form and indicated by 20, is generally similar with regard to formation of its mouth to the container shown in Fig. 1, except that below theestraight portion 15 of the closure mouth the annular seat 16 is formed against which the gasket 12 is pressed when the closure is in fully inserted position.

In Fig. 6 a modified form of container is shown generally similar to that shown in Fig. 1 and indicated at 21, but having a rounded internal lip indicated at 23 instead of the conical lip indicated in Fig. 1. In Fig. 7 still another form of container is indicated at 22, the mouth of which is formed by a continuouslyflnclined surface as indicated at 24;. In Fig. 3 the container, here indicated' as of bottle form, is marked 19 and has its mouth formed as in Fig. 2. The closure is shown as having a head 18 which does not extend over the top of the container and it is also shown with a prolonged narrow cylindrical portion 17 extending well into the mouth of the bottle below the gasket 15 and serving to prevent the tipping of the closure in the bottle neck.

In operation the parts are assembled as indicated in Figs. 4 and 5. A narrow gasket 12 is inserted on the reduced portion 11 of the projection 18, so as to rest against the shoulder 13 and project for an appropriate distance beyond the depending portion 18. In use the closure is brought to position over the container, as indicated in F ig. 4, and forced down to the position indicated in Fig. 5, the gasket being compressed in passing over the inclined surface 14 and held in compressed condition against the straight portion 15. By preference, and as shown, the gasket 12 is of a thickness somewhat less than the len 'th of the narrow cylindrical part 11 on whic it rests, so that when thickened up by compression, as shown in Fig. 5, it will not extendbelow the edge of part 11. In Fig. 8 the" closure is shown as having a small hole in it filled with a plug 20, which can be perforated or punched in to relieve the pressure and make it easier to remove the closure.

The operation of the closure in connection with the modified form of container shown in Figs. 5 and 6 is obvious, and the operation of the closure in the construction shown in Fig. 2 involves the compression of the gasket, not only against the portion 15 of the container mouth, but also against the shoulder 16.

It will be very obvious to those skilled in the art that my construction is one especially well adapted for the sealing of containers under a vacuum, and it will also be obvious that my construction involves the minimum consumption of material used for making the closure and the gasket, and I would call special attention to the fact that my closure enables a narrow gasket to be used with much better results than would be obtainable with a broad gasket, because in view of the small size of the gasket it is not liable to buckle or kink while being inserted, but is compressed and held in position evenly at all points of its circumference.

It will be ver obvious that my closure, as shown in all *igs. except Fig. 3,can be readily removed from the container by insertion of a convenient tool, such as a knife blade, between the top of the container and the flange 17 of the closure and afterremoval the closure is well adapted for renewed use in connection with the container.

Having now described my invention,what I claim as newand desire to secure by Letters Patent, is:

1. A sealing closure for containers comprising an annular outwardly extending flange adapted to extend over the mouth of the container, a downwardly extending cygasket fitted against said shoulder and a' container having a mouth contracting from the top inwardly in such manner as to compress the gasket laterally as the closure is pushed downtherein, said contracted portion extending for a distance not substan tially greater than the length of the downwardly extending portion of the closure above the gasket, said container mouth having also below said contracted portion a lateral seating surface for the compressed gasket so formed as not to substantially affect the compression of the gasket as it moves over it.

2. A sealing closure for containers having an annular outwardly extending flange adapted to extend over the mouth of the container, a downwardly extending cylindrical portion adapted to enter freely the mouth of the container for a considerable distance and having a downward extension 7 of less diameter and an annular shoulder formed between the broad and narrow portions ofsaid extension at a distance from.

the top of the closure, said shoulder being adapted to form a seat for a narrow gasket fitted on the narrower portion of said extension and a narrow compressible gasket fitted against said shoulder, in combination with a container having a mouth contracting from the top inward for a distance not substantially greater than the length of the downwardly extending portion of the closure above the gasket, and below said contracted portion of cylindrical form so as to compress the gasket laterally as the closure is forced into the container mouth and furnish a cylindrical surface holding the gasket in compressed condition when the closure is 7 fully inserted.

3. A sealing closure for containers comprising a head adapted to extend above the container mouth, a downwardly extending cylindrical portion adapted to enter freely the mouth of a container for a considerable distance and having a downward cylindrical extension of less diameter and an annular shoulder formed between the broader and narrower portions of said cylindrical portion to form an abutment for a gasket fitted on the narrower cylindrical portion in combination with a narrow compressible gasket fitted against said shoulder, and a container having a mouth inwardly flared at its upper end so asto compress the gasket laterally as the closure is forced into the container mouth and a shoulder formed below said inwardly flared end to form a seat for the compressed gasket when the closure is inserted.

4. A sealing closure for containers having an annular outwardly extending flange adapted to extend over the mouth of the container, a downwardlyextending cylindrical portion adapted to enter freely the mouth of the container for a considerable distance and having a downward extension of less diameter, and an annular shoulder formed between the broad and narrow portions of said extension at a distance from the top of the closure, said shoulderv being adapted to form a seat for a narrow gasket fitted on the narrower portion of said extension, anda narrow compressible gasket fitted against said shoulder, in combination with a container having a mouth'contracting from the top inward for a distance not substantially greater than the length of the downwardly extending portion of the closure above the gasket, and below said contracted portion of cylindrical form terminating in an annular shoulder so as to compress the gasket laterally as the closure is forced into the container mouth and furnish a cylindrical surface and abutting shoulder holding the gasket in compressed condition when the closure, is fully inserted.

HARRY E. TONNSEND. 

